Nelly Alexandra Kamwelu is a Tanzanian model and beauty queen who won the Miss Universe Tanzania and Miss Southern Africa International titles in 2011.

Kamwelu was born to a Tanzanian father and a Russian Greek Mother. She started participating in regional beauty contests in 2008 and finally ended up as a second runner up in Miss Ilala 2008[1] after which she was able to participate in Miss Tanzania the same year but was unplaced.